var enablepersist="on"
var collapseprevious="no"

function getElementbyClass(classname)
{
    ccollect=new Array()
    var inc=0
    var alltags=document.all? document.all : document.getElementsByTagName("*")
    for (i=0; i<alltags.length; i++)
    {
        if (alltags[i].className==classname)
            ccollect[inc++]=alltags[i]
    }
}

function contractcontent(omit)
{
    var inc=0
    while (ccollect[inc])
    {
        if (ccollect[inc].id!=omit)
        ccollect[inc].style.display="block"
        inc++
    }
}
function expandcontent(cid,img,src1,src2)
{
    if (typeof ccollect!="undefined")
    {
        if(document.getElementById(cid).style.display!="none")
        {
            document.getElementById(cid).style.display = "none"
            document.getElementById(img).src=src2;
            document.getElementById(img).alt="Open"
        }
        else
        {
            document.getElementById(cid).style.display = "block"
            document.getElementById(img).src=src1;
            document.getElementById(img).alt="Close"
        }
    }
}

function revivecontent()
{
    contractcontent("omitnothing")
    selectedItem=getselectedItem()
    selectedComponents=selectedItem.split("|")
    for (i=0; i<selectedComponents.length-1; i++)
    document.getElementById(selectedComponents[i]).style.display="none"
}

function get_cookie(Name) 
{ 
    var search = Name + "="
    var returnvalue = "";
    if (document.cookie.length > 0) 
    {
        offset = document.cookie.indexOf(search)
        if (offset != -1) 
        { 
            offset += search.length
            end = document.cookie.indexOf(";", offset);
            if (end == -1) end = document.cookie.length;
            returnvalue=unescape(document.cookie.substring(offset, end))
        }
    }
    return returnvalue;
}

function getselectedItem()
{
    if (get_cookie(window.location.pathname) != "")
    {
        selectedItem=get_cookie(window.location.pathname)
        return selectedItem
    }
    else
    return ""
}

function saveswitchstate()
{
    var inc=0, selectedItem=""
    while (ccollect[inc])
    {
        if (ccollect[inc].style.display=="none")
        selectedItem+=ccollect[inc].id+"|"
        inc++
    }
    document.cookie= window.location.pathname+"="+selectedItem
}

function do_onload()
{
    uniqueidn=window.location.pathname+"firsttimeload"
    getElementbyClass("switchcontent")
    if (enablepersist=="on" && typeof ccollect!="undefined")
    {
        document.cookie=(get_cookie(uniqueidn)=="")? uniqueidn+"=1" : uniqueidn+"=0" 
        firsttimeload=(get_cookie(uniqueidn)==1)? 1 : 0 //check if this is 1st page load
        if (!firsttimeload)
        revivecontent()
    }
}
if (window.addEventListener)
    window.addEventListener("load", do_onload, false)
else if (window.attachEvent)
    window.attachEvent("onload", do_onload)
else if (document.getElementById)
    window.onload=do_onload
if (enablepersist=="on" && document.getElementById)
    window.onunload=saveswitchstate
